Commentaries on this disc:

It doesn't make much sense that Roy Ward Baker, who admits in this commentary that he is an "actor's director" and not interested in the camera as a personality, was given so many fantasy-horror-SF assignments that would have been a great opportunity for directorial/cinematic flair. Fittingly, he's paired with SF writer Nigel Kneale who similarly admits that he knows nothing about science. The result is that the two of them support each other's views about how "less is better" and how splendid the result is. There's no argument that this is a good film, but it looks as cheesy as as hell at times, so it's disappointing to hear these two in denial, taking the take of ragging on about newer films with all their fancy-schmancy effects when "all we needed was a bit of string", to the extent that after a while the commentary feels like listening to two old codgers on the porch complaining about all those damn neighbourhood kids. An occasional moderator (who is he?) is fortunately on hand somewhere in the background to prompt the two commentators with a question whenever the track appears to dry up, and he even squeezes a final anecdote out of Baker as the credits roll.